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 > Towing speed

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opnspaces

San Diego Ca

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Posted: 08/07/19 01:08pm Link  |  Quote  |  Print  |  Notify Moderator

60 - 62


1996 Suburban 4x4. 350, 4.10 3/4 ton
2005 Jayco Jay Flight 27BH
1986 Coleman Columbia Popup.

js218

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Posted: 08/07/19 04:33pm Link  |  Quote  |  Print  |  Notify Moderator

Whatever the speed limit is.


2017 Haulmark 45' Super C 600hp, 12 speed I shift transmission, tandem drive axles, 3 stage engine brake, towing 26' trailer with an 08 explorer inside.
Jim

blt2ski

Kirkland, Wa

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Posted: 08/07/19 05:37pm Link  |  Quote  |  Print  |  Notify Moderator

SOme states like Washington, have two interstate limits in "SOME" areas. IE 70 in lower population/fewer exit/on ramp areas, FOR rigs UNDER 10K gvw, NOT towing. If over 10K gvw, and/or towing, then max 60mph or in some area's, like downtown Seattle, 55, parts of Tacoma in a construction zone 50mph.....
I find 60-62 is nice on cruise. As noted, 65+, clobbers mpg's, yeah we are not supposed to worry about them.....reality, some of us do like to get the best mpg, for a given speed area driving etc.
If you have a dually, or ANY SW pickup with a license over 10K gvw, your limit towing or not is 60 mph!

Marty


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00 Chev C2500, V5700, 4L80E, 4.10, base truck, no options!
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Hammerboy

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Posted: 08/07/19 06:16pm Link  |  Quote  |  Print  |  Notify Moderator

65 on the interstates, rarely do I pass anyone which is nice. Only time I need to get in the left lane is on ramp traffic.

Dan


2013 Chevy crew 2500 HD Duramax
2017 Wildcat 29rlx fifth wheel

Big1

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Posted: 08/07/19 08:20pm Link  |  Quote  |  Print  |  Notify Moderator

I try to keep my speed around 65 mph my tires allow me to go 80 mph but I know I wouldn't do that but for the most part I try to get in the slow lane or the two left hand lane and do the speed.


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Jim2007

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Posted: 08/07/19 09:21pm Link  |  Quote  |  Print  |  Notify Moderator

My 5th wheel ST tires are rated for maximum speed of 60 MPH.. so I hold my speed to 60 to 65 MPH.... Jim2007.


TV: 2016 Dodge 2500 Diesel
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Bobbo

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Posted: 08/08/19 08:28am Link  |  Quote  |  Print  |  Notify Moderator

I ran a test with my previous RV, then repeated it with my current RV, and got the same results.

I have a 1000 mile trip I take regularly. (Memphis to Colorado Springs to visit my sister.)

First RV: driving 70mph I got 6mpg, driving 60mph I got 9mpg (a 50% increase in gas mileage for a 14% decrease in speed). This was a 32' Class C on an E450 chassis.

Second RV: driving 70mph I got 8mpg, driving 60mph I got 12mpg (a 50% increase in gas mileage for a 14% decrease in speed). This is an Airstream travel trailer.

I assume that is almost entirely due to wind resistance.

So, my personal speed limit is 60ish. I say "ish" because most people drive on a 5mph division, 50 or 55 or 60. I like to drive at a slightly different speed so they don't "wolfpack" around me. I actually drive at 62mph. That way, everyone driving 60mph, I slowly pass. Everyone driving 65mph, slowly passes me. But, they don't bunch up around me.


Bobbo, Linda and the furry kid (45 pound rescue)
2017 F-150 XLT 4x4 SuperCab w/Max Tow Package 3.5l EcoBoost V6
2017 Airstream Flying Cloud 23FB


Terryallan

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Posted: 08/08/19 07:07pm Link  |  Quote  |  Print  |  Notify Moderator

mkirsch wrote:

Terryallan wrote:

People can see your trailer in plenty of time to adjust their speed. So don't worry about it.


People plow into the backs of stopped patrol cars with all lights flashing that are off on the shoulder with alarming regularity, so I would not count on the fact that your trailer is large and white being enough to attract the average driver's attention.

I'm not concerned about fault here. I'm concerned with protecting my personal property and not having a weekend ruined by some jackwagon who can't pay attention while driving.


Not concerned if they do hit it. they will have to go thru 30 feet of trailer to get to me, and then they still have to buy me a new one.


Terry & Shay
Coachman Apex 288BH.
2013 F150 XLT Off Road
5.0, 3.73
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dieseltruckdriver

Black Hills of SD

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Posted: 08/08/19 09:24pm Link  |  Quote  |  Print  |  Notify Moderator

I liked going 62 with my last pickup, but this one does not like 62 at all. The transmission is constantly shifting. If I speed up to 68 - 69 it almost never shifts.
I have also checked mileage, as I do on almost every fill, and there is absolutely no difference in my pickup driving 55 and using my foot so as not have the cruise control trying to give full throttle on every hill, vs. driving 69 with the cruise. I have said this before, but this doesn't compute in my brain, slower should get better mileage, but it doesn't.


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Bobbo

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Posted: 08/09/19 07:59am Link  |  Quote  |  Print  |  Notify Moderator

dieseltruckdriver wrote:

slower should get better mileage, but it doesn't.

As long as the transmission isn't always shifting. Your point about the transmission hunting is the explanation. You do want your set speed to be far enough above the shift point that a slight rise or small hill doesn't make it downshift.

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